Magnetic holes are small-scale, isolated decreases of the magnetic field strength, which are found in interplanetary space, as well as in planetary magnetosheaths.  They are commonly divided into two types, linear and rotational magnetic holes, based on the rotation of the magnetic field vector from one side of the hole to the other.  After a brief introduction, I will present Solar Orbiter and Parker Solar Probe measurements of magnetic holes from the inner heliosphere and Cassini and Juno measurements from the outer heliosphere. I will compare properties such as rate of occurrence, and distributions of scale size, depth, and amount of magnetic field rotation, and discuss the findings in terms of local generation of magnetic holes, versus transport of magnetic holes generated in the inner heliosphere. I will also discuss the relative importance of magnetic holes in interacting with the magnetospheres of planets in the inner and outer heliosphere.

recording: www.youtube.com/watch